Finding the Fourth Proportional to 1,946.56, 2,686.40 and 1,118.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,946.56 : 2,686.40 = 1,118.56 : x
2. Step 2: Convert to fraction form
   1,946.56/2,686.40 = 1,118.56/x
3. Step 3: Cross multiply
   1,946.56x = 2,686.40 × 1,118.56
4. Step 4: Simplify right side
   1,946.56x = 3,004,899.58
5. Step 5: Solve for x
   x = 3,004,899.58/1,946.56
6. Step 6: Final answer
   x = 1,543.70